OpenAI launches GPT-6.1 Sun and ChatGPT Space on DevDay: Almost Astra AI for 20% of cost

OpenAI used its annual DevDay, held on Tuesday, to announce two products that attack different fronts: the GPT-6.1 Sol, a new model that, according to the company, delivers capabilities close to Astra for 20% of the cost, and ChatGPT Space, a productivity software that mixes Google Docs and Notion resources and allows colleagues and their AI agents to work together on the same document. The announcement was reported by Tae Kim's substack, which describes the movement as an unambiguous resumption of OpenAI in the race for cutting-edge models.

GPT-6.1 Sun: what it is and why the cost of 20% is the highlight

The central point of the announcement is not to overcome the Astra in gross capacity, but to approach it by charging a fraction of the price — in terms disclosed by the company itself, 20% of the cost. It is a different position than usual in border launches, which usually compete for absolute benchmarks.

This difference is important for those who put models into production in volume, a scenario in which the inference account takes over the product budget. By promising cutting-edge performance at a fifth of the cost, OpenAI signals that it wants to compete on the ground of applications running on a scale, not just that of laboratory demonstrations.

ChatGPT Space: the revolution of interactive documents

The second announcement is ChatGPT Space, described as a productivity software with features of Google Docs and Notion. The proposal is that colleagues and their AI agents work collaboratively within the documents, rather than the AI being restricted to a chat window next to the file.

The difference in mental model is great: writing assistants already exist in competing editors, but as a point resource of text generation. Here, the agent appears as another participant in the workspace, with access to the same content as people.

Competition: how rivals respond to the cost of GPT-6.1 Sun

The ad follows a pattern that consolidated in 2026. Anthropic launched Claude Sonnet 5 promising power near Opus at a lower price, and Google presented Gemini 3.5 Flash optimized for agents for tasks executed in volume. OpenAI was also pushing the idea of agents working alone, as in the case of dots.

Reading is that the race is no longer just about which model responds best and has become about cost per task and real integration to the workflow. On this axis, ChatGPT Space is as important as the new model: it is where AI ceases to be a consulted tool and becomes co-author of deliveries.

GPT-6.1 Sol in Brazil: what changes to devs and companies

As API prices are quoted in dollar, a 20% reduction in the cost of a state-of-the-art model directly changes the economic viability of products with tight margins — especially in cases of high volume use, such as service, document analysis, and content generation.

Already the corporate adoption of ChatGPT Space depends on questions that still have no public answer: who answers for what an agent writes in a contract, where the workspace data is stored and how this dialogues with LGPD. Without this detail, legal and security teams tend to hold the deployment.

GPT-6.1 Sun and ChatGPT Space: what the ad hasn't answered yet

The source material does not bring GPT-6.1 independent benchmarks Sun, prices per million tokens, general availability dates and details about a possible corporate version of ChatGPT Space. There is also no indication of how Space integrates into suites already used by Brazilian companies.

Frequently Asked Questions about GPT-6.1 Sun and ChatGPT Space

What is GPT-6.1 Sun?

It is the new model announced by OpenAI on DevDay, presented as capable of delivering capabilities close to Astra for 20% of the cost of the cutting-edge model.

Does ChatGPT Space replace Google Docs and Notion?

It combines characteristics of both, but the difference lies in collaboration with AI agents within the document, and not just in automatic writing resources.

When are the products available?

The source material does not specify general availability dates or prices for GPT-6.1 Sun and ChatGPT Space.